Drill engine



FIG. 1 is perspective view of a drill engine of the type used to power a medical drilling device (not shown) according to the present invention;

FIG. 2 is a front view of the drill engine;

FIG. 3 is a left side view of the drill engine;

FIG. 4 is a right side view of the drill engine;

FIG. 5 is a rear view of the drill engine;

FIG. 6 is a top view of the drill engine; and,

FIG. 7 is a bottom view of the drill engine.

An exemplary power cord coupling is shown in broken lines in FIGS. 1 and 2, and forms no part of the patented design. 

CLAIM We claim the ornamental design for a drill engine, as shown and described. 